On 08/27/2018 09:05 AM, TE Dukes wrote: > >> -----Original Message----- >> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of Richard >> Sent: Monday, August 27, 2018 7:58 AM >> To: CentOS mailing list >> Subject: Re: [CentOS] Mail has quit working >> >>> Date: Monday, August 27, 2018 07:42:48 -0400 >>> From: TE Dukes <tdukes at palmettoshopper.com> >>> >>>> From: CentOS [mailto:centos-bounces at centos.org] On Behalf Of >>>> Richard Sent: Monday, August 27, 2018 7:29 AM >>> >>>> >>>> Since the localhost4 approach worked, commend out the ipv6 >>>> localhost entries in your /etc/hosts file, then try: >>>> >>> IP6 is commented out >>> >>>> dig @localhost localhost a >>> >>> That works >>>> >>>> again. If that works try: >>>> >>>> telnet localhost 143 >>> >>> This also works >>>> >>>> once again. If those work, it would seem that your ipv6 is messed >>>> up and your system is trying it first and not falling back to ipv4. >>>> >>>> Regarding your nameserver list in /etc/resolv.conf. If you have a >>>> working 127.0.0.1 nameserver you generally don't include external >>>> nameservers in that list. So, if non-ipv6 things seem to work, I'd >>>> remove the two non-127 nameservers from that list. >>>> >>> Removed the two nameservers. Still can't access mail. Getting >>> connection to storage server failed on the roundcube login page. >>>> >> >> That you can now successfully get to "localhost" is good progress. >> Seems you want to stay away from ipv6 networking issues unless/until >> you resolve whatever that issue is. >> >> Roundcube is, potentially, a totally separate issue. I don't use it, >> so can only suggest minimal debugging ideas. >> >> What is the hostname that you use to get to your roundcube instance? >> Can you resolve that: >> >> dig <hostname> a >> >> If you get an answer, is the ipnumber correct? >> > > ; <<>> DiG 9.9.4-RedHat-9.9.4-61.el7 <<>> mail.palmettodomains.com a > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40652 > ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 3 > > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags:; udp: 4096 > ;; QUESTION SECTION: > ;mail.palmettodomains.com. IN A > > ;; ANSWER SECTION: > mail.palmettodomains.com. 86400 IN A 126.96.36.199 > > ;; AUTHORITY SECTION: > palmettodomains.com. 86400 IN NS dns1.palmettodomains.com. > > ;; ADDITIONAL SECTION: > dns1.palmettodomains.com. 86400 IN A 192.168.1.110 > dns1.palmettodomains.com. 86400 IN AAAA aaaa:bbbb::110 > > ;; Query time: 0 msec > ;; SERVER: 127.0.0.1#53(127.0.0.1) > ;; WHEN: Mon Aug 27 09:01:48 EDT 2018 > ;; MSG SIZE rcvd: 132 > >> Note, if the hostname for your roundcube instance is one of the ipv6 >> entries in your /etc/hosts file, I'd remove that - and either put in >> an ipv4 entry or put an entry for it in your dns. >> > > Thanks again! I still think it's a mail issue. I can't get mail using > usermin either. > > Think I'm going to remove the TLS stuff from postfix main.cf that I added > yesterday and retry. If I missed this further up thread my apologies - is SELinux enabled and are there any relevant exceptions being logged?